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參數(shù)資料
| 型號： | TSB41BA3AIGGM |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | IEEE 1394b THREE-PORT CABLE TRANSCEIVER/ARBITER |
| 中文描述： | 的IEEE 1394b三端口電纜收發(fā)器/仲裁者 |
| 文件頁數(shù)： | 31/66頁 |
| 文件大?。?/td> | 895K |
| 代理商： | TSB41BA3AIGGM |
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SLLS618B JUNE 2004 REVISED AUGUST 2004
31
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
using the TSB41BA3A with a 1394-1995 or 1394a-2000 link layer
The TSB41BA3A implements the PHY-LLC interface specified in the 1394b Supplement. This interface is based
upon the interface described in Section 17 of IEEE 1394b-2002. When using a LLC compliant with this interface,
the BMODE input must be tied high.
The TSB41BA3A also functions with a LLC that is compliant with the older 1394 standards. This interface is
compatible with both the older Annex J interface specified in the IEEE Std 1394-1995 (with the exception of the
Annex J isolation interfacing method) and the PHY-LLC interface specified in 1394a-2000. When using a LLC
compliant with this interface, the BMODE input must be tied low.
When the BMODE input is tied low, the TSB41BA3A implements the PHY-LLC interface specified in the
1394a-2000 Supplement. This interface is based upon the interface described in informative Annex J of IEEE
Std 1394-1995, which is the interface used in the oldest Texas Instruments PHY devices. The PHY-LLC
interface specified in 1394a-2000 is compatible with the older Annex J. However, the TSB41BA3A does not
support the Annex J isolation interfacing method. When implementing the 1394a-2000 interface, certain signals
are not used:
The PINT output (terminal 1) may be left open.
The LCLK_PMC input (terminal 7) must be tied directly to ground or through a pulldown resistor of ~1 k
or less, unless the PMC mode is desired (see LCLK_PMC terminal description).
All other signals are connected to their counterparts on the 1394a link-layer controller. The PCLK output
corresponds to the SCLK input signal on most LLCs.
The 1394a-2000 Supplement includes enhancements to the Annex J interface that should be comprehended
when using the TSB41BA3A with a 1394-1995 LLC device.
A new LLC service request was added which allows the LLC to temporarily enable and disable
asynchronous arbitration accelerations. If the LLC does not implement this new service request, then the
arbitration enhancements must not be enabled (see the EAA bit in PHY register 5).
The capability to perform multispeed concatenation (the concatenation of packets of differing speeds) was
added in order to improve bus efficiency (primarily during isochronous transmission). If the LLC does not
support multispeed concatenation, then multispeed concatenation must not be enabled in the PHY (see the
EMC bit in PHY register 5).
In order to accommodate the higher transmission speeds expected in future revisions of the standard,
1394a-2000 extended the speed code in bus requests from 2 bits to 3 bits, increasing the length of the bus
request from 7 bits to 8 bits. The new speed codes were carefully selected so that new 1394a-2000 PHY
and LLC devices would be compatible, for speeds from S100 to S400, with legacy PHY and LLC devices
that use the 2-bit speed codes. The TSB41BA3A correctly interprets both 7-bit bus requests (with 2-bit
speed code) and 8-bit bus requests (with 3-bit speed codes). Moreover, if a 7-bit bus request is immediately
followed by another request (for example, a register read or write request), then the TSB41BA3A correctly
interprets both requests. Although the TSB41BA3A correctly interprets 8-bit bus requests, a request with
a speed code exceeding S400 while in 1394a-2000 PHY-link interface mode results in the TSB41BA3A
transmitting a null packet (data-prefix followed by data-end, with no data in the packet).
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TSB41BA3AIPFP | 功能描述:緩沖器和線路驅動器 Three-Port Cable Xcvr/Arbiter RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| TSB41BA3APFP | 功能描述:緩沖器和線路驅動器 Three-Port Cable Xcvr/Arbiter RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| TSB41BA3APFPG4 | 功能描述:1394 接口集成電路 Three-Port Cable Xcvr/Arbiter RoHS:否 制造商:Texas Instruments 類型:Link Layer Controller 工作電源電壓: 封裝 / 箱體:LQFP 封裝:Tray |
| TSB41BA3ATPFPEP | 功能描述:緩沖器和線路驅動器 Mil Enh 3-Port Cable Xcvr/Arbiter RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| TSB41BA3B | 制造商:TI 制造商全稱:Texas Instruments 功能描述:IEEE 1394b THREE-PORT CABLE TRANSCEIVER/ARBITER |
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